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oracle.security.crypto.cert.ext
Class SubjectKeyIDExtension

java.lang.Object
oracle.security.crypto.cert.X509Extension
oracle.security.crypto.cert.ext.SubjectKeyIDExtension

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, oracle.security.crypto.asn1.ASN1Object, oracle.security.crypto.util.Streamable

public class SubjectKeyIDExtension

extends X509Extension

Represents the certificate extension Subject Key Identifier from RFC 2459. This extension MUST NOT be critical.

The key ID bytes should be obtained from the subject public key using one of the following two methods (or using some other method that produces unique IDs):

1. The SHA-1 hash of the bit-string value of the subjectPublicKey (excluding the tag, length, and number of unused bits).
2. A four bit type field with the value 0100 followed by the least significant 60 bits of the SHA-1 hash of the bit-string value of the subjectPublicKey.

See Also:

Serialized Form

Field Summary

Fields inherited from class oracle.security.crypto.cert.X509Extension

id_netscape_ce, id_netscape_ce_type, id_set_ce, id_set_ce_type, isDecoded

Constructor Summary

SubjectKeyIDExtension()
Create a new extension with the appropriate OID type.

SubjectKeyIDExtension(byte[] keyID)
Creates a new extension with the specified subject key identifier.

SubjectKeyIDExtension(byte[] keyID, boolean critical)
Creates a new extension with the specified subject key identifier.

SubjectKeyIDExtension(java.io.InputStream is)

Method Summary

byte[]	getSubjectKeyID() Gets the subject key ID for this extension.
java.lang.String	toString() Returns a string representation of this object.

Methods inherited from class oracle.security.crypto.cert.X509Extension

getCritical, getType, getValue, input, inputInstance, isRecognized, length, output, readExternal, setCritical, setValue, writeExternal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SubjectKeyIDExtension

public SubjectKeyIDExtension()

Create a new extension with the appropriate OID type.

Note: An object created using this constructor may not be in a valid state. This constructor is intended primarily for use in conjunction with the X509Extension.input(java.io.InputStream) method.

SubjectKeyIDExtension

public SubjectKeyIDExtension(byte[] keyID)

Creates a new extension with the specified subject key identifier. Extension is non-critical.

Parameters:

keyID - A byte[] containing the subject key identifier.

SubjectKeyIDExtension

public SubjectKeyIDExtension(byte[] keyID,
                             boolean critical)

Creates a new extension with the specified subject key identifier.

Parameters:

keyID - A byte[] containing the subject key identifier.

critical - true if this extension is critical, false otherwise.

SubjectKeyIDExtension

public SubjectKeyIDExtension(java.io.InputStream is)
                      throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getSubjectKeyID

public byte[] getSubjectKeyID()

Gets the subject key ID for this extension.

toString

public java.lang.String toString()

Description copied from class: X509Extension

Returns a string representation of this object.

Overrides:

toString in class X509Extension

Returns:

a string representation

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